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No deaths or serious injuries were reported after the overnight twisters, Sioux Falls Mayor Paul TenHaken said Wednesday. Thirty-seven structures collapsed or have major integrity issues, officials said.

The three EF-2 tornadoes confirmed to have touched down in Sioux Falls are the first there since June 2001.

The Avera Behavioral Health Hospital, one of those damaged, said all patients were safe and some were moved to other facilities, according to a hospital spokesperson. Several people there suffered minor injuries from the roof collapsing, said the hospital's president and CEO, David Flicek.

KSFY

A tornado ripped off part of the Avera Behavioral Health Hospital's roof and caused significant damage to the building's windows, overnight Sept. 11, 2019, in Sioux Falls, S.D.

With so much debris on the roads, a "No Travel Advisory" was issued in the city. The advisory was lifted at 8 a.m. Wednesday, but police urged drivers to use caution "as there may be areas still impacted, unreported downed power lines, tree debris or other road hazards."